(b)On April 26, 2016, Robert L. Harris, II, a member of the board of directors and of the Office of the Chairman of Acacia Research Corporation (the “Company”) notified the board of directors that he will retire therefrom, effective as of June 9, 2016, the date of the Company’s 2016 annual meeting of stockholders (the “Annual Meeting”). Mr. Harris will continue to serve as a director until such time. Mr. Harris’ decision to retire is not the result of any dispute or disagreement with the Company on any matter relating to the Company’s operations, policies or practices. Following his retirement, Mr. Harris will continue providing consulting services to the board of directors and the Company pursuant to the terms of the Director Service Agreement between Mr. Harris and the Company, dated as of February 29, 2016, effective as of February 29, 2016, the terms of which the Company previously disclosed.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.